4.23.1.3 fanViaCones

Syntax:

fanViaCones( list Cones )
fanViaCones( cone c_1,...,cone c_n )

Type:

fan

Purpose:

fan generated by the cones supplied, either via a list or via single arguments

Example:

LIB"gfanlib.so"; intmat M[2][2]=1,0,0,1; cone c=coneViaPoints(M); intmat N[2][2]=1,0,0,-1; cone d=coneViaPoints(N); fan f=fanViaCones(c,d); f; ==> _application PolyhedralFan ==> _version 2.2 ==> _type PolyhedralFan ==> ==> AMBIENT_DIM ==> 2 ==> ==> DIM ==> 2 ==> ==> LINEALITY_DIM ==> 0 ==> ==> RAYS ==> 0 -1 # 0 ==> 0 1 # 1 ==> 1 0 # 2 ==> ==> N_RAYS ==> 3 ==> ==> LINEALITY_SPACE ==> ==> ORTH_LINEALITY_SPACE ==> -1 0 # 0 ==> 0 -1 # 1 ==> ==> F_VECTOR ==> 1 3 2 ==> ==> SIMPLICIAL ==> 1 ==> ==> PURE ==> 1 ==> ==> CONES ==> {} # Dimension 0 ==> {0} # Dimension 1 ==> {1} ==> {2} ==> {0 2} # Dimension 2 ==> {1 2} ==> ==> MAXIMAL_CONES ==> {0 2} # Dimension 2 ==> {1 2} ==> ==> MULTIPLICITIES ==> 1 # Dimension 2 ==> 1 ==> list L=c,d; fan g=fanViaCones(L); g; ==> _application PolyhedralFan ==> _version 2.2 ==> _type PolyhedralFan ==> ==> AMBIENT_DIM ==> 2 ==> ==> DIM ==> 2 ==> ==> LINEALITY_DIM ==> 0 ==> ==> RAYS ==> 0 -1 # 0 ==> 0 1 # 1 ==> 1 0 # 2 ==> ==> N_RAYS ==> 3 ==> ==> LINEALITY_SPACE ==> ==> ORTH_LINEALITY_SPACE ==> -1 0 # 0 ==> 0 -1 # 1 ==> ==> F_VECTOR ==> 1 3 2 ==> ==> SIMPLICIAL ==> 1 ==> ==> PURE ==> 1 ==> ==> CONES ==> {} # Dimension 0 ==> {0} # Dimension 1 ==> {1} ==> {2} ==> {0 2} # Dimension 2 ==> {1 2} ==> ==> MAXIMAL_CONES ==> {0 2} # Dimension 2 ==> {1 2} ==> ==> MULTIPLICITIES ==> 1 # Dimension 2 ==> 1 ==>